"2.12 Apps that are not very useful, are simply web sites bundled as apps, or do not provide any lasting entertainment value may be rejected"
For your reference this was the complete description of the rejection:
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10.6
We found the user interface of your app is not of sufficient quality to be appropriate for the App Store. Apps that provide a poor user experience are not in compliance with the App Store Review Guidelines.
Specifically, we noticed your app does not take advantage of the iOS platform. It would be appropriate to add iOS specific UI and functionality.
Please evaluate whether you can make the necessary revisions to improve the user experience of your app.
Alternatively, you may wish to consider building a web app using HTML5. HTML5 is the major new version of HTML and enables audio and video to play natively in the browser without requiring proprietary plug-ins. Using HTML5, web apps look and behave like native iPhone and iPad apps, and using HTML5's Offline Application Cache, your web apps work even when the device is offline. With web apps, you have flexibility to deliver as much or as little functionality as you desire.
If you wish to build an HTML5 web app, you can do so and distribute it directly from your web site. It is not appropriate to resubmit an HTML5 web app to the App Store.
To get started with iPhone or iPad web apps, please review Getting Started with iPhone Web Apps.
For a description of the HTML elements and attributes you can use in Safari on iPhone, check out Safari HTML Reference: Introduction.
The unfortunate thing about having a business that is at the mercy another business (such as iphone apps) is that apple can at any point block anything coming from OP's site. But thank god for competition.
There's a service called Tapatalk that does something very similar to what Appifier does, but for forums, and has a number of generated "native forum apps" in the App Store.